ASTROSAT CZTI

Data Quality Report

Orbit 38346

Creation date: 2024-06-27T21:51:31.320192
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_094T24_9000005374_38346cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38346cztM0_level2_quad_clean.evt
Size (bytes)449,651,52092,453,760
Size428.8 MB 88.2 MB
Events in quadrant A2,871,546673,211
Events in quadrant B2,855,160684,037
Events in quadrant C2,721,522642,710
Events in quadrant D7,801,302443,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115753
B0117812
C0110502
D0267982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084150.295043%
B5084631.239182%
C5084420.826121%
D5084142928.107789%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7207 5085 4 4 0.06% 0.08%
B 7207 5085 38 38 0.53% 0.75%
C 7207 5085 27 27 0.37% 0.53%
D 7207 5085 1396 1396 19.37% 27.45%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 425246 3499.8 608 598 121.3
A 12 189 51106 416.27 608 598 121.3
A 13 248 21093 168.91 608 598 121.3
B 4 232 152526 1348.18 608 595 112.7
B 0 183 87507 771.22 608 595 112.7
B 10 245 77627 683.55 608 595 112.7
C 15 214 219446 1649.39 583 588 132.7
C 2 16 74331 555.75 583 588 132.7
C 0 207 46819 348.41 583 588 132.7
D 12 235 1695953 14013.17 500 486 121.0
D 12 227 1676589 13853.12 500 486 121.0
D 10 203 1263510 10438.99 500 486 121.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter